has he been dna tested for being male??
ok keep an eye on his poop, as awful as it sounds, the poop coloured part will reflect what his eaten, so try not to feed to much high colour foods. poop should be colour (depends on colour of food) white bit an clear liquid also should be odourless
best food are pellets, i feed mine harrisons super fine (though she is uber picky and will not eat them as much if other foods about)
fresh fruit an veggies avoid seeds and stones from the fruit, other then pomegranet seeds
cooked pulses, beans etc
egg white, chicken and the bone as treats, keep an eye on all fattening foods and use them as treats
nut will eat anything we eat! but she can't, i may let her have a lick of curry, but anymore and in the long run can cause her health probs
do not feed advacado's or chocolate! if unsure of new food look them up on net etc
its hard to tell when your parrot is ill, look for subtle changes in charactor, feathers are a good indication if a birds, puffed up an squatting, in time you will get to know your bird an be able to tell changes in its behaviour etc
as your bird is young introduce it to everyday things, my nut is petrified of the hoover. she was 2nd hand, but she loves to watch me preping food for cooking etc
and welcome to the world of sene's

they love to play and are very naughty birds! but very easy to train! (as long as its what they want to do!)